The maximum displacement of the medium particle on either side of its mean position is called …………… of the wave.

1. frequency
2. time period
3. wavelength
4. amplitude

The number of vibrations made by a particle of a medium in one second is called …………… of the wave.

1. frequency
2. time period
3. wavelength
4. wave velocity

At compressions, the density and pressure of a medium is ……………, while at rarefactions the density and pressure of a medium is ……………

1. minimum, minimum
2. minimum, maximum
3. maximum, maximum
4. maximum, minimum

The correct relation between wavelength, wave velocity and frequency is :

1. V - f = λ
2. V = fλ
3. fV = λ
4. λV = f